Nope never regretted it, I moved to the middle of nowhere with my kids. They are so much happier with the space. They love their new school, so much more room to run around as school is not so packed (their words)! And when older they can take part in loads of the local activities. I worked with teenagers in London and lots of them struggled with space at home, and didn't have all the opportunities one would expect with a city (unless they had 'well-off' parents). And some of the stuff I saw was very sad, knife crime was a big problem in one of the schools I worked in. So I searched for a different life for my kids.
I would have stayed in London if I didn't have the kids, for a bit longer anyway. But children need a decent home, and we could not have afforded that in London or anywhere near! Now I don't need to work as much to afford a decent house, so we have more family time.
So absolutely no regrets, I haven't missed London once which even I am surprised about!
Another bonus is less pollution. The pollution in London has gotten so bad, the new 'lung cancer'. I didn't realize how much better I would feel, physically, until I moved away.
I do love London though and it's an amazing city, but my life has significantly improved since I moved away.
Goodluck